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  <h1 class="topictitle1">Capacity</h1>
 
   
  <div>
	 
<div class="tablenoborder"><table cellpadding="4" summary="" frame="border" border="1" cellspacing="0" rules="all"><span class="tabledesc">The following table provides additional information on the members
		  of this template class. 
		</span><thead align="left"> 
			 <tr> 
				<th class="cellrowborder" valign="top" width="33.89830508474576%" id="d56013e29">Member 
				</th>
 
				<th class="cellrowborder" valign="top" width="66.10169491525423%" id="d56013e32">Description 
				</th>
 
			 </tr>
</thead>
 
		  <tbody> 
			 <tr> 
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d56013e29 "><span class="keyword">size_type size() const</span> 
				</td>
 
				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d56013e32 ">
				  <p><strong>Returns</strong>: Number of elements in the
					 vector. The result may include elements that are allocated but still under
					 construction by concurrent calls to any of the growth methods.
				  </p>
 
				</td>
 
			 </tr>
 
			 <tr> 
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d56013e29 "><span class="keyword">bool empty() const</span> 
				</td>
 
				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d56013e32 ">
				  <p><strong>Returns</strong>: 
					 <samp class="codeph">size()==0 
					 </samp> 
				  </p>
 
				</td>
 
			 </tr>

			 <tr>
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d56013e29 "><span class="keyword"> size_type capacity()
					 const</span> 
				</td>

				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d56013e32 ">
				  <p><strong>Returns</strong>: Maximum size to which
					 vector can grow without having to allocate more memory.
				  </p>
 
				  <div class="Note"><h3 class="NoteTipHead">
					Note</h3>
					 <p>Unlike an 
						<samp class="codeph">std::vector</samp>, a 
						<samp class="codeph">concurrent_vector</samp> does not move existing
						elements if it allocates more memory. 
					 </p>

				  </div>
				</td>

			 </tr>

			 <tr>
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d56013e29 ">size_type max_size() const
				</td>

				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d56013e32 ">
				  <p><strong>Returns</strong>: The highest possible size
					 of the vector could reach.
				  </p>

				</td>

			 </tr>
 
		  </tbody>
 
		</table>
</div>
 
  </div>
 

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<div class="parentlink"><strong>Parent topic:</strong>&nbsp;<a href="../../../reference/containers_overview/concurrent_vector.htm">concurrent_vector</a></div>
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